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            "questionId": "2221",
            "questionFrontendId": "2116",
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            "title": "Check if a Parentheses String Can Be Valid",
            "titleSlug": "check-if-a-parentheses-string-can-be-valid",
            "content": "<p>A parentheses string is a <strong>non-empty</strong> string consisting only of <code>&#39;(&#39;</code> and <code>&#39;)&#39;</code>. It is valid if <strong>any</strong> of the following conditions is <strong>true</strong>:</p>\n\n<ul>\n\t<li>It is <code>()</code>.</li>\n\t<li>It can be written as <code>AB</code> (<code>A</code> concatenated with <code>B</code>), where <code>A</code> and <code>B</code> are valid parentheses strings.</li>\n\t<li>It can be written as <code>(A)</code>, where <code>A</code> is a valid parentheses string.</li>\n</ul>\n\n<p>You are given a parentheses string <code>s</code> and a string <code>locked</code>, both of length <code>n</code>. <code>locked</code> is a binary string consisting only of <code>&#39;0&#39;</code>s and <code>&#39;1&#39;</code>s. For <strong>each</strong> index <code>i</code> of <code>locked</code>,</p>\n\n<ul>\n\t<li>If <code>locked[i]</code> is <code>&#39;1&#39;</code>, you <strong>cannot</strong> change <code>s[i]</code>.</li>\n\t<li>But if <code>locked[i]</code> is <code>&#39;0&#39;</code>, you <strong>can</strong> change <code>s[i]</code> to either <code>&#39;(&#39;</code> or <code>&#39;)&#39;</code>.</li>\n</ul>\n\n<p>Return <code>true</code> <em>if you can make <code>s</code> a valid parentheses string</em>. Otherwise, return <code>false</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/11/06/eg1.png\" style=\"width: 311px; height: 101px;\" />\n<pre>\n<strong>Input:</strong> s = &quot;))()))&quot;, locked = &quot;010100&quot;\n<strong>Output:</strong> true\n<strong>Explanation:</strong> locked[1] == &#39;1&#39; and locked[3] == &#39;1&#39;, so we cannot change s[1] or s[3].\nWe change s[0] and s[4] to &#39;(&#39; while leaving s[2] and s[5] unchanged to make s valid.</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;()()&quot;, locked = &quot;0000&quot;\n<strong>Output:</strong> true\n<strong>Explanation:</strong> We do not need to make any changes because s is already valid.\n</pre>\n\n<p><strong>Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;)&quot;, locked = &quot;0&quot;\n<strong>Output:</strong> false\n<strong>Explanation:</strong> locked permits us to change s[0]. \nChanging s[0] to either &#39;(&#39; or &#39;)&#39; will not make s valid.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>n == s.length == locked.length</code></li>\n\t<li><code>1 &lt;= n &lt;= 10<sup>5</sup></code></li>\n\t<li><code>s[i]</code> is either <code>&#39;(&#39;</code> or <code>&#39;)&#39;</code>.</li>\n\t<li><code>locked[i]</code> is either <code>&#39;0&#39;</code> or <code>&#39;1&#39;</code>.</li>\n</ul>\n",
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            "exampleTestcases": "\"))()))\"\n\"010100\"\n\"()()\"\n\"0000\"\n\")\"\n\"0\"",
            "categoryTitle": "Algorithms",
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                    "code": "class Solution {\npublic:\n    bool canBeValid(string s, string locked) {\n        \n    }\n};",
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                    "code": "class Solution(object):\n    def canBeValid(self, s, locked):\n        \"\"\"\n        :type s: str\n        :type locked: str\n        :rtype: bool\n        \"\"\"\n        ",
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                    "code": "public class Solution {\n    public bool CanBeValid(string s, string locked) {\n        \n    }\n}",
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                    "code": "/**\n * @param {string} s\n * @param {string} locked\n * @return {boolean}\n */\nvar canBeValid = function(s, locked) {\n    \n};",
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                    "code": "# @param {String} s\n# @param {String} locked\n# @return {Boolean}\ndef can_be_valid(s, locked)\n    \nend",
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                    "code": "class Solution {\n    func canBeValid(_ s: String, _ locked: String) -> Bool {\n        \n    }\n}",
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                    "lang": "Go",
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                    "code": "func canBeValid(s string, locked string) bool {\n    \n}",
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                    "code": "impl Solution {\n    pub fn can_be_valid(s: String, locked: String) -> bool {\n        \n    }\n}",
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                    "code": "class Solution {\n\n    /**\n     * @param String $s\n     * @param String $locked\n     * @return Boolean\n     */\n    function canBeValid($s, $locked) {\n        \n    }\n}",
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                    "lang": "Erlang",
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                    "code": "-spec can_be_valid(S :: unicode:unicode_binary(), Locked :: unicode:unicode_binary()) -> boolean().\ncan_be_valid(S, Locked) ->\n  .",
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                    "code": "defmodule Solution do\n  @spec can_be_valid(s :: String.t, locked :: String.t) :: boolean\n  def can_be_valid(s, locked) do\n\n  end\nend",
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            "hints": [
                "Can an odd length string ever be valid?",
                "From left to right, if a locked ')' is encountered, it must be balanced with either a locked '(' or an unlocked index on its left. If neither exist, what conclusion can be drawn? If both exist, which one is more preferable to use?",
                "After the above, we may have locked indices of '(' and additional unlocked indices. How can you balance out the locked '(' now? What if you cannot balance any locked '('?"
            ],
            "solution": null,
            "status": null,
            "sampleTestCase": "\"))()))\"\n\"010100\"",
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